Manogauge diaphragm pressure gauge - type 1 model ZX-05-1. Range 0–60 kPa. Accuracy ±1.6%. SS / Brass. Connection G/PT/NPT 1/2". 2 configurations available. ISO 9001 / CE / KS certified.
| Pressure Range | 0–60 kPa |
| Dial Size | Ø40–100mm |
| Material | SS / Brass |
| Accuracy | ±1.6% |
| Connection | G/PT/NPT 1/2" |
| Filling | Dry |
| Configurations | 2 variants |
| Sensing element | Corrugated diaphragm (SS316L standard; tantalum or Hastelloy C-276 optional) |
| Diaphragm area | Ø 80 mm effective sensing area (100 mm dial size) |
| Media temp. range | −20 °C to +120 °C (standard SS diaphragm) |
| Min. span | 0–10 mbar achievable with low-range diaphragm option |
| Flush process conn. | DN50 or DN80 flush-mount flange (DIN 11864 / ASME B16.5) available |
ZX-05 vs diaphragm pressure gauges across market tiers
| Feature | Manogauge ZX-05 | European Tier-1 | American Tier-1 | Generic (unbranded) |
|---|---|---|---|---|
| Price range (USD) | $18–45 | $55–110 | $60–130 | $8–20 |
| Accuracy class | Class 1.6 | Class 1.6 | Class 1.0 | Class 2.5 |
| Diaphragm materials | 316L SS / Ta / HC-276 | 316L / Monel / Ta | 316L / HC-276 | 304 SS typical |
| Min. range | 0–10 mbar (opt.) | 0–10 mbar | 0–25 mbar | 0–1 kPa typical |
| Flush-mount option | Yes — DN50/DN80 flange | Yes — wide range | Yes — wide range | Limited options |
| Lead time | 7–14 business days | 4–8 weeks | 5–10 weeks | 5–10 days |
| Minimum order | No MOQ | No MOQ | No MOQ | 20–50 units typical |
| Custom dial | Yes — no tooling fee | Available, setup fee | Available, setup fee | Limited options |
| Certifications | CE / PED; 3-A optional | CE / ATEX / 3-A | UL / 3-A | Varies by supplier |
A diaphragm gauge senses pressure via a large, flexible metal plate rather than a coiled tube. This gives three advantages: it can measure very low pressures (down to 10 mbar), the sensing cavity can be made flush-mount so viscous or clogging media never enter a narrow passage, and the diaphragm material can be changed independently of the connection body.
Standard: 316L stainless steel. Optional: tantalum (strong mineral acids), Hastelloy C-276 (mixed acid/chloride service), PTFE-lined (hydrofluoric acid). Each material must be selected based on the specific process chemistry.
With the standard diaphragm, the minimum reliable range is 0–1 kPa. An optional low-range diaphragm (increased sensitivity) extends this to 0–10 mbar. Below 5 mbar, consider an electronic differential pressure transmitter for better resolution.
Yes. Gas, vapour, and liquid pressures are all measured correctly. For aggressive or condensing vapour, ensure the diaphragm cavity is self-draining or specify a heating jacket to prevent condensate accumulation.
The flush-mount diaphragm is exposed directly to CIP and SIP flows. 316L diaphragm withstands caustic (2% NaOH at 80 °C) and acidic (1% HNO₃) CIP cycles. Specify EPDM diaphragm gasket for aggressive CIP chemicals; Viton for high-temperature SIP to 135 °C.
Process connections: G1/2, G1, DN50/DN80 flanges (DIN 11864, PN16 or PN40), ASME B16.5 flanges (150# or 300#), and DIN 11851 hygienic couplings. Specify connection and pressure rating at order.
The diaphragm deflects onto a protective stop inside the measuring cell at approximately 200% FS, preventing permanent deformation. For pressures above 150% FS sustained, the gauge should be removed and inspected. Unlike a Bourdon tube, the diaphragm failure mode is typically a hairline crack — replace, never repair.
Standard version: vacuum down to −1 bar (full atmospheric vacuum). For compound ranges (e.g. −1 to +1 bar), specify at order. The diaphragm is pre-loaded to handle vacuum without inversion.
Preferred orientation is vertical (diaphragm facing down) for liquid media to avoid air pockets in the measuring cell, and horizontal for gas media. Any orientation is functional; note that heavy diaphragm materials (tantalum) may cause a small zero shift if mounted non-vertically — compensate during calibration.
For process control: annually, or after any significant overpressure event. For utility monitoring: every two years. ZX-05 can be recalibrated in-place with a pneumatic calibrator connected to the process port if the line can be isolated.